Forum Discussion
wa8yxm
Mar 10, 2016Explorer III
First. even a pure resistive load like a curling iron the initial "Inrush" is much higher wattage than the rated load.
If you can try this, using a multimeter measure the OHMS between the plug terminal (Unplugged of course) with the thing switched on
120 watts. would give a reading of 120 ohms... 240 60 ohms.. You can figure things (W=14400/r or R=14400/W) So you can do your own math (Calculator app)
I'm guessing the cold resistance will be just about half what you expect.. as the wire heats, the resistance increases, We tech types have a name for it but all you need to know is as the wire heats it gets more resistive.
If you can try this, using a multimeter measure the OHMS between the plug terminal (Unplugged of course) with the thing switched on
120 watts. would give a reading of 120 ohms... 240 60 ohms.. You can figure things (W=14400/r or R=14400/W) So you can do your own math (Calculator app)
I'm guessing the cold resistance will be just about half what you expect.. as the wire heats, the resistance increases, We tech types have a name for it but all you need to know is as the wire heats it gets more resistive.
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